* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
#canvas1 {
  border: 5px solid black;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 100%;
  max-height: 100%;
}
#player, #layer1, #layer2, #layer3, #layer4, #layer5, #enemy_fly, #enemy_plant, #enemy_spider_big, #fire, #collisionAnimation {
  display: none;
}